private function includes() {
		spl_autoload_register( array( $this, 'autoload' ) );

		// Load the WP abstraction file so BuddyPress can run on all WordPress setups.
		require( $this->plugin_dir . 'bp-core/bp-core-wpabstraction.php' );

		// Setup the versions (after we include multisite abstraction above).
		$this->versions();

		/** Update/Install ****************************************************/

		// Theme compatibility.
		require( $this->plugin_dir . 'bp-core/bp-core-template-loader.php'     );
		require( $this->plugin_dir . 'bp-core/bp-core-theme-compatibility.php' );

		// Require all of the BuddyPress core libraries.
		require( $this->plugin_dir . 'bp-core/bp-core-dependency.php'       );
		require( $this->plugin_dir . 'bp-core/bp-core-actions.php'          );
		require( $this->plugin_dir . 'bp-core/bp-core-caps.php'             );
		require( $this->plugin_dir . 'bp-core/bp-core-cache.php'            );
		require( $this->plugin_dir . 'bp-core/bp-core-cssjs.php'            );
		require( $this->plugin_dir . 'bp-core/bp-core-update.php'           );
		require( $this->plugin_dir . 'bp-core/bp-core-options.php'          );
		require( $this->plugin_dir . 'bp-core/bp-core-taxonomy.php'         );
		require( $this->plugin_dir . 'bp-core/bp-core-filters.php'          );
		require( $this->plugin_dir . 'bp-core/bp-core-attachments.php'      );
		require( $this->plugin_dir . 'bp-core/bp-core-avatars.php'          );
		require( $this->plugin_dir . 'bp-core/bp-core-widgets.php'          );
		require( $this->plugin_dir . 'bp-core/bp-core-template.php'         );
		require( $this->plugin_dir . 'bp-core/bp-core-adminbar.php'         );
		require( $this->plugin_dir . 'bp-core/bp-core-buddybar.php'         );
		require( $this->plugin_dir . 'bp-core/bp-core-catchuri.php'         );
		require( $this->plugin_dir . 'bp-core/bp-core-functions.php'        );
		require( $this->plugin_dir . 'bp-core/bp-core-moderation.php'       );
		require( $this->plugin_dir . 'bp-core/bp-core-loader.php'           );
		require( $this->plugin_dir . 'bp-core/bp-core-customizer-email.php' );
		require( $this->plugin_dir . 'bp-core/bp-core-rest-api.php'         );
		require( $this->plugin_dir . 'bp-core/bp-core-blocks.php'           );

		// Maybe load deprecated functionality (this double negative is proof positive!).
		if ( ! bp_get_option( '_bp_ignore_deprecated_code', ! $this->load_deprecated ) ) {
			require( $this->plugin_dir . 'bp-core/deprecated/1.2.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/1.5.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/1.6.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/1.7.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/1.9.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.0.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.1.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.2.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.3.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.4.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.5.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.6.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.7.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.8.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/2.9.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/3.0.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/4.0.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/6.0.php' );
			require( $this->plugin_dir . 'bp-core/deprecated/7.0.php' );
		}

		// Load wp-cli module if PHP 5.6+.
		if (
			defined( 'WP_CLI' )
			&& ! class_exists( 'Buddypress\CLI\Command\BuddypressCommand' )
			&& file_exists( $this->plugin_dir . 'cli/wp-cli-bp.php' )
			&& version_compare( phpversion(), '5.6.0', '>=' ) ) {
			require( $this->plugin_dir . 'cli/wp-cli-bp.php' );
		}
	}